diff --git a/src/damaris/data/ADC_Result.py b/src/damaris/data/ADC_Result.py
index e325daf..d7fe4a3 100644
--- a/src/damaris/data/ADC_Result.py
+++ b/src/damaris/data/ADC_Result.py
@@ -183,7 +183,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
         for i in range(self.get_number_of_channels()):
             tmp_y.append(self.y[i][start:end+1].copy())
 
-        r = ADC_Result(x = tmp_x, y = tmp_y,  index = [(0,len(tmp_y[0])-1)], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
+        r = ADC_Result(x = tmp_x, y = tmp_y,  index = [(0,len(tmp_y[0])-1)], sampl_freq = self.sampling_rate, desc = self.description.copy() if self.description is not None else None, job_id = self.job_id, job_date = self.job_date)
         self.lock.release()
         return r
 
diff --git a/src/damaris/data/Accumulation.py b/src/damaris/data/Accumulation.py
index 623447b..de4395d 100644
--- a/src/damaris/data/Accumulation.py
+++ b/src/damaris/data/Accumulation.py
@@ -118,9 +118,23 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
             tmp_y.append(self.y[i][start:end+1])
 
         r = Accumulation(x = tmp_x, y = tmp_y, n = self.n, index = [(0,len(tmp_y[0])-1)], sampl_freq = self.sampling_rate, error = self.use_error)            
+        if self.uses_statistics():
+            r.y_square = []
+            for i in range(self.get_number_of_channels()):
+                r.y_square.append(self.y_square[i][start:end+1])
+        if self.common_descriptions is not None:
+            r.common_descriptions = self.common_descriptions.copy()
+        r.time_period = self.time_period[:]
+        r.job_ids = self.job_ids.copy()
         self.lock.release()
         return r
 
+    def get_result_by_index(self, index):
+        return self.get_accu_by_index(index)
+
+    def get_Result_by_index(self, index):
+        return self.get_accu_by_index(index)
+
     def get_ysquare(self, channel):
         if self.uses_statistics():
             try:
@@ -1032,10 +1046,10 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                 self.set_title(self.__title_pattern % self.n)
                 if hasattr(other, "is_clipped"):
                     self.is_clipped = other.is_clipped
-                self.common_descriptions=other.common_desriptions.copy()
+                self.common_descriptions=other.common_descriptions.copy()
                 self.time_period=other.time_period[:]
                 self.job_id = other.job_id      # added by Oleg Petrov
-                self.job_ids += other.job_ids
+                self.job_ids.update(other.job_ids)
                 self.lock.release()
 
                 return self
@@ -1066,6 +1080,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                 self.time_period=[min(self.time_period[0],other.time_period[0]),
                                   max(self.time_period[1],other.time_period[1])]
                 self.job_id = other.job_id
+                self.job_ids.update(other.job_ids)
                 # Removes mismatched common description keys
                 if self.common_descriptions is not None and other.common_descriptions is not None:
                     # Get all keys that exist in both dictionaries
diff --git a/tests/res_test.py b/tests/res_test.py
index fbffda9..b14e47d 100644
--- a/tests/res_test.py
+++ b/tests/res_test.py
@@ -10,12 +10,6 @@ def result():
         print("h5 already opened")
     accu = Accumulation(error=False)
     for num,ts in enumerate(results):
-        x = numpy.linspace(0, 1, 10)
-        y1 = [numpy.array([0, 4000, 8190, 8191, 8192, 0, -8191, -8192, -8193, 0], dtype="int16")]
-    
-        # Test with default (14-bit)
-        adc1 = ADC_Result(x=x, y=y1, index=[(0,9)], sampl_freq=1000, desc={}, job_id=1, job_date=0)
-        accu.is_clipped = True
         data["accu"] = accu
         data["data/ts %i"%num] = ts+0
         ts.write_to_hdf(h5, "/", f"adc_{num}", f"adc_{num}")
diff --git a/tests/test_Accumulation.py b/tests/test_Accumulation.py
index daef1a8..84d6927 100644
--- a/tests/test_Accumulation.py
+++ b/tests/test_Accumulation.py
@@ -105,7 +105,7 @@ class TestAccumulation(unittest.TestCase):
         self.assertTrue(np.array_equal(sub_result.y[0], np.array([20, 30])))
         self.assertTrue(np.array_equal(sub_result.y[1], np.array([25, 35])))
         self.assertEqual(sub_result.index, [(0, 1)])
-        # TODO Fix #13: self.assertEqual(sub_result.common_descriptions, {"key": "value"})
+        self.assertEqual(sub_result.common_descriptions, {"key": "value"})
 
     def test_write_to_csv_without_error(self):
         """Test the functionality of writing to CSV."""